A Superstrate Loaded High Gain Circularly Polarized Slotted Waveguide Array

Abstract

In this paper, a Superstrate loaded slotted waveguide is proposed. A polarizer superstrate is kept at an optimized distance above the slot aperture. The analysis and optimization has been done by CST Microwave studio 14.0. The presented antenna resonates at 9.32 GHz. The gain of designed antenna has been achieved up to 8.1dBi. The presented slotted waveguide array is reconfigured to LHCP by rotating the polarized superstrate layer by 90°.